It's actually common sense. If we sign a SG one of our SGs is going to be moved. DD, Ross or Fields I am guessing. if we sign a PG one of our PGs will be traded. Most likely Klow since he is expiring.

Therein lies our fundamental difference. I'm all in for this season and our current starting lineup. As attractive as Lowry's contract is to trade...I want to see this starting 5 through for the whole season. I'm optimistic they'll do well together.

I'm gunning for us to make some noise THIS SEASON. And thus I'd like a 3rd center vs a 4th PG or PF because it will benefit the team's overall performance.

If for whatever reason by February the Raptors are absolutely horrible and have no shot at the playoffs...sure trade Lowry. But why do you care to have a 3rd PG after Lowry's gone? Kind of defeats the purpose of tanking to have insurance at the PG spot after you stop caring about the current season.

Therein lies our fundamental difference. I'm all in for this season and our current starting lineup. As attractive as Lowry's contract is to trade...I want to see this starting 5 through for the whole season. I'm optimistic they'll do well together.

And he's the only PG that gets us something other than a bag of feces.

It depends, if we just ship him for anything in return we also need to hope the other team will be ok getting a rental for the rest of the season.
His contract isn't hefty so it's not a huge incentive for a team to take him knowing he is off the books. I think based on his performance, contract and age he has some value, how much? It's hard to say.